Classification lamp



Nov. 15, 1927.

ST. CLAER C. HOLLAND CLAS S IFICATION LAMP Filed Sept. .20. 1926 2 Sheets-Sheet 1 IN VEN TOR S CLAIR.C.HOLLAND FIG. 6 I

ATTORNEY ST. CLAIR C. HOLLAND CLASSIFICATION LAMP Filed Sept. 20. 1926 2 Sheets-Sheet 2 INVZNIOR s cLAmc. HOLLAND VQME/K /m ATTORNEY Fatented Nov. 15, 1927..

airso srarss ST. CLAIR C. HOLLAND, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR TO THE RQBEBI MITCHELL COMPANY LIMITED, F MONTREAL, CANADA.

CLASSIFICATION LAMP.

7 Application filed September 20, 1926, Serial No. 136,697, and in Canada June 21, 1926.

This invention relates to new and useful improvements in classification lamps for use on railroads, and the object of the invention is to provide a simple and easily manipuv lated lamp which will allow a variety of adjustments to be made to. expose colour combinations of lighting without removing the lamp from its support.

Another object is to provide a lamp which may be easily attached to any apparatus to display lights at the rear, front or side of the apparatus.

In my invention 1 provide a lamp casing having a pair of lenses on two sides thereof 5 and means on the other two sides for attaching the lamp to any apparatus. The

top of the lamp is provided with a hinged cover and spring controlled locking means for holding the cover in the closed position.

The lower part of the lamp is provided with a socket for an electric bulb and means for attaching the lamp to a source of current supply. Within the casing and held therein by means of guides, is a guide or blinder and rotatably mounted in the blinder is the classification cylinder having four openings, two of which are provided with frames which support panes of glass through which the light from the bulb may be projected to the lenses on the side of the casing. The classification cylinder is mounted on a sliding support within and at the bottom of the casing and is connected to an operating handle by means of a bolt passing through a slot in the bottom of the casing. The

handle is rotatably secured to the socket at the bottom of the casing.

In the drawings which illustrate my in vention;

40 Figure 1 is a side elevation of my improved classification lamp.

Figure 2 is a sectional plan of the lamp taken on the line 2-2 Figure 1.

Figure 3 is a sectional elevation of the lamp taken on the line 33 Figure 2.

Figure 4 is a sectional plan taken on the line -d of Figure 3.

Figure 5 is a sectional elevation of the bottom of the lamp taken on the line 5-5 Figure 4.

Figure 6 is a side elevation of the lug for attaching the device to any apparatus on which lights of this type are used.

Figure 7 is a sectional elevation of the lamp cover and the means of attaching it to the lamp.

Referring more particularly to the drawing frames 12. The lenses 18 are secured to 7 said frames by means of channel-shaped rings 14, the ends of which are drawn together by bolts 16. Positioned diametrically opposite to each of the lenses are the lugs 15. which are spaced from the side of the casing by means of the ribs 17. These lugs are tapered inwardly towards the bottom edge 18 so that when placed in a receiving slot the weight of the lamps tends to fasten, locks the lug in position, and wedges itself in the receiving slot (not shown). Attached to the top of the lamp by means of the hinge 19 is the dome-shaped cover 20. A spring catch- 21 is secured to the cover and is adapted to pass through between a locking bar 22 and the side of the casing. The spring catch is positioned diametrically oppositeto the hinge and is provided with an aperture 23 adapted to engage with a pin2d projecting outwardly froinand secured to the wall of the casing. The lower end of the lamp casing is provided with a downwardly projecting boss 25 upon which is rotatably mounted the ring 26 having a handle 27 projecting outwardly therefrom. The ring is held in place by means of a nut 28 engaging with the threaded portion 29 of the boss 25. The interior of the boss is threaded to receive the end of a bulb socket 30 into which an electric bulb 31 may be placed in such a manner that the centre of the bulb coincides horizontally with the centre of the lenses. Cables from a source of current supply may be secured to the bottom of the boss 25 and secured in place by means of the screw 32. Formed in the bottom of the centre of the casing and projecting upward ly thereinto but clear of the bulb socket, is the guide ring 33 and rotatably mounted on said guide ring is the classification cylinder supporting bracket 34. The bracket 34 is secured to the ring 26 by means of the bolt 35 which passes through a slot 37 formed in the bottom of the casing. The classification cylinder 38 is secured to and adapted to rotate with the bracket 34 and projects upwardly into the lamp casing. The classification cylinder is provided with four apertures 39 in the side thereof, and at right angles to one another. The apertures are so positioned that they align with the lens covered openings in the casing wall but are spaced therefrom. Extending inwardly from and secured by any suitable means to the wall of the casing are the blinders 10, positioned diametrically opposite to one another and clear of the lens covered openings in the casing, so that they will not interfere with any light projected from the bulb through the said openings, and the openings in the classification cylinder aligning therewith. Riveted or otherwise secured to the interior of the cylinder 38are the glass supporting frames 4-2, which are so positioned that the glass sheets 43 placed therein cover two of the openings in the cylinder 38 and are positioned at right angles to one another. The glass sheets may be coloured to suit the requirements of the railroad. autobuses, or other apparatus to which the lamp may he attached. The current supply to the bulb may be controlled from a switch, not shown, and in close proximity to the bottom of the lamp to facilitate operation of same.

In operation the lamp is attached to the apparatus upon which it has to be used, by sliding the tapered lug into a recess formed in said apparatus and it will bescen that the weight of the lamp tends to hold the lamp in position. By moving the handle two clear lights may be exposed, or a coloured and a clear light may be exposed, or a coloured light may be exposed through both lenses. To hold the lights in any desired position spring arms 44 are secured to the classification cylinder supports at one of their ends and terminate at their free end 45 in hooks 46 adapted to contact with the sides of the bolt 35. The ends of the hooks limit the movement of the classification cylinder to 180. Inspection of the apparatus is very easily made as the cover may be unlocked and the top of the lamp opened to allow easy access to the interior of the lamp for repairs and the like.

The device is very simple in construction and operation, there being little mechanism which may go out of order, a very desirable feature in devices of this class.

Having thus described my invention,

what I claim is:-

1. In a classification lamp for railroads, a casing of cylindrical form having a closed end and a hinged cover at the other end, frames projecting from the walls thereof at right angles to one another and surrounding apertures in the wall of the casing, lenses in said frames, a classification cylinder secured to a ring rotatably mounted in the interior of the casing, said cylinder having four openings each adapted to align with the apertures, and positioned at right angles to one another, a handle rotatably mounted on a boss formed on the bottom of the easing, a bolt passing through a slot in the bottom of the casing and connecting the ring with the handle, frames surrounding two of the openings in the classification cylinder. coloured transparent material in said frames which are positioned at right angles to one another, a source of illumination within the cylinder and blinder means extending radially from the inner wall of the casing and dian'ietrically opposite to one another and clear of the apertures in the easing.

2. A lamp according to claim 1 having spring means secured to the cylinder and contacting with the bolt to allow adjustment to be made within the lamp.

In witness whereof, I have hereunto set my hand.

ST. CLAIR C. HOLLAND. 

